通过php提取xml的数据问题
我知道php有很多方式从xml中获取数据,最方便的是通过正则表达式,但是如果使用DOM方法要怎么做?
我百度了一下,不是很懂,求大神解释一下。
比方说
这一段的xml,我想通过id属性来获取对应的值该怎么办?
我现在是第一种:
preg_match_all( "/\
第二种:
$doc = new DOMDocument();
$doc->load('sixx.xml'); //读取xml文件
$Results = $doc->getElementsByTagName( "Record" );
foreach($Results as $Result){
$Records = $Result->getElementsByTagName("Item");
$times = $Records->item(0)->nodeValue;
}
定位到Item继续操作
都是没有利用id的,我想知道如果利用XML的ID取数据改怎么办?
我有尝试用getElementById()获取,提示没有这个方法。。。
Call to undefined method DOMElement::getElementById()。
求大神帮忙解答一下,谢谢。
------解决思路----------------------$s =<<< XML<br /><root><br /><Record><br /><Item Id="1"><Value>20110524</Value><br /></Item><br /><Item Id="7"><Value>13.82</Value><br /></Item><br /><Item Id="8"><Value>13.94</Value><br /></Item><br /><Item Id="9"><Value>13.79</Value><br /></Item><br /><Item Id="11"><Value>13.85</Value><br /></Item><br /></Record><br /><Record><Item Id="1"><Value>20110525</Value><br /></Item><br /><Item Id="7"><Value>13.82</Value><br /></Item><br /><Item Id="8"><Value>13.86</Value><br /></Item><br /><Item Id="9"><Value>13.58</Value><br /></Item><br /><Item Id="11"><Value>13.60</Value><br /></Item><br /></Record><br /></root><br />XML;<br />$xml = simplexml_load_string($s);<br />$t = $xml->xpath('//*[@Id="8"]');<br />print_r($t);
Array<br />(<br /> [0] => SimpleXMLElement Object<br /> (<br /> [@attributes] => Array<br /> (<br /> [Id] => 8<br /> )<br /><br /> [Value] => 13.94<br /> )<br /><br /> [1] => SimpleXMLElement Object<br /> (<br /> [@attributes] => Array<br /> (<br /> [Id] => 8<br /> )<br /><br /> [Value] => 13.86<br /> )<br /><br />)<br /><br />
------解决思路----------------------
没有问题<?php<br />$xml = simplexml_load_file('6.xml');<br />foreach( $xml->Item as $a ){<br /> echo $a->Value . '<br>';<br />}
20110524<br />13.82<br />13.94<br />13.79<br />13.85<br />20110525<br />13.82<br />13.86<br />13.58<br />13.60<br />
------解决思路----------------------
使用simplexml_load_file 或 simplexml_load_string 就可以把xml转为数组了。
参考:http://php.net/manual/en/function.simplexml-load-file.php

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